<template>
  <div class="login_body">
    <div class="bg" />
    <div class="box">
      <div class="title">智慧园区-登录</div>
      <!-- 表单区域 -->
      <!--
        el-form: 绑定表单对象 / 绑定校验规则对象
        el-form-item: 通过prop属性指定一下当前的表单要使用哪条校验规则
        el-input: 双向绑定的 v-model
       -->
      <el-form ref="form" :model="loginForm" :rules="loginRules">
        <el-form-item label="账号" prop="username">
          <el-input v-model="loginForm.username" />
        </el-form-item>

        <el-form-item label="密码" prop="password">
          <el-input v-model="loginForm.password" />
        </el-form-item>

        <el-form-item prop="remember">
          <el-checkbox v-model="loginForm.remember">记住密码</el-checkbox>
        </el-form-item>

        <el-form-item>
          <el-button type="primary" class="login_btn" @click="doLogin">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { FORMDATA_KEY } from '@/constants/localKey'
import { savePassword, checkPassword } from '@/utils/passEncript'
export default {
  name: 'Login',
  data() {
    return {
      // 注意：这里的字段名要以将来提交给后端的接口为主
      loginForm: {
        username: 'admin',
        password: 'admin123',
        remember: false
      },
      loginRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }
        ]
      }
    }
  },
  mounted() {
    const rememberObj = checkPassword(this.loginForm.password)
    if (rememberObj) {
      this.loginForm.password = rememberObj
    }
  },
  methods: {
    doLogin() {
      // 表单的统一校验
      // this.$refs[formName] -> el-form组件实例对象
      // .validate 调用实例身上的校验方法 -> 对所有需要校验的表单进行统一验证
      // valid 布尔值 只有当所有表单都通过校验时才为true
      this.$refs.form.validate(async valid => {
        if (!valid) return
        // 校验通过 -> 登录
        await this.$store.dispatch('user/asyncLogin', this.loginForm)
        const redirect = this.$route.query.redirect
        if (redirect) {
          this.$router.push(redirect)
        } else {
          this.$router.push('/')
        }
        this.$message({
          message: '登录成功',
          type: 'success'
        })
        if (this.loginForm.remember) {
          savePassword(this.loginForm.password)
        } else {
          localStorage.removeItem(FORMDATA_KEY)
        }
      })
    }

  }
}
</script>

<style scoped lang="scss">
.login_body {
  display: flex;
}

.bg {
  width: 60vw;
  height: 100vh;
  background: url('~@/assets/login-bg.svg') no-repeat;
  background-position: right top;
  background-size: cover;
}

.box {
  margin: 200px 10% 0;
  flex: 1;

  .title {
    padding-bottom: 76px;
    font-size: 26px;
    font-weight: 500;
    color: #1e2023;
  }

  ::v-deep() {
    .ant-form-item {
      display: flex;
      margin-bottom: 62px;
      flex-direction: column;
    }

    .ant-form-item-label label {
      font-size: 16px;
      color: #8b929d;
    }

    .ant-input,
    .ant-input-password {
      border-radius: 8px;
    }
  }
}

.login_btn {
  width: 100%;
}
</style>
